Source code
Revision control
Copy as Markdown
Other Tools
Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-animations/animation-delay-009.html - WPT Dashboard Interop Dashboard
<!doctype html>
<html class="reftest-wait">
<meta charset="utf-8">
<title>CSS Animations Test: animation-delay - liveness with animationend</title>
<link rel="author" title="Brian Birtles" href="mailto:bbirtles@mozilla.com">
<meta name="assert" content="Check that shortening the animation-delay triggers
an animationend event">
<meta name="flags" content="dom">
<link rel="match" href="animation-common-ref.html">
<style>
@keyframes all-red {
from { background-color: red }
to { background-color: red }
}
div {
width: 100px;
height: 100px;
background-color: orange;
}
</style>
<div></div>
<script>
// Set up animation with no delay
var div = document.querySelector('div');
div.style.animation = 'all-red 1000s';
window.getComputedStyle(div).animation;
// Set up an animationend event handler to change the background color
div.addEventListener('animationend', function() {
div.style.animation = 'none';
div.style.backgroundColor = 'green';
});
// Wait until animation has started and change delay
window.requestAnimationFrame(function() {
// Fast-forward to end
div.style.animationDelay = '-1000s';
// Wait a frame to allow the event handler to run
window.requestAnimationFrame(function() {
document.documentElement.removeAttribute('class');
});
});
</script>
</html>